<?php
/*
	检查网站是否宕机
 */
function Visit($url){
    $agent = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";

    $ch=curl_init();
	curl_setopt ($ch, CURLOPT_URL,$url );
	curl_setopt($ch, CURLOPT_USERAGENT, $agent);
	curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt ($ch,CURLOPT_VERBOSE,false);
	curl_setopt($ch, CURLOPT_TIMEOUT, 5);
	curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, FALSE);
	curl_setopt($ch,CURLOPT_SSLVERSION,3);
	curl_setopt($ch,CURLOPT_SSL_VERIFYHOST, FALSE);
	$page=curl_exec($ch);
	//echo curl_error($ch);

	$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

	curl_close($ch);

	if($httpcode>=200 && $httpcode<300) return true;

	else return false;

}

if (Visit("http://www.google.com"))
	echo "Website OK";
else
	echo "Website DOWN";